Teaching
Signal and Systems — Teaching Assistant
Southern University of Science and Technology (SUSTech) · Spring 2026
Signal and Systems introduces the fundamental tools for representing and analyzing continuous-time and discrete-time signals and systems. The course covers system properties such as linearity and time invariance, LTI system analysis through impulse responses and convolution, and frequency-domain representations using Fourier series and Fourier transforms. It also introduces sampling, aliasing, and basic system analysis, providing a mathematical foundation for further study in signal processing, communication systems, and related areas.
Key Topics
- Continuous-time and discrete-time signals
- Unit impulse and unit step functions
- Linearity and time invariance
- Linear time-invariant (LTI) systems
- Impulse responses
- Convolution
- Periodic and aperiodic signals
- Continuous-time Fourier series
- Discrete-time Fourier series
- Continuous-time Fourier transform (CTFT)
- Discrete-time Fourier transform (DTFT)
- Fourier transform properties
- Sampling theorem
- Undersampling and aliasing
- Basic system analysis and design